<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Dom相关</title>
</head>
<body>
<script>
  let d = document.createElement("div");
  d.innerText = "我是div";
  document.body.appendChild(d);
  let h1 = document.createElement("h1");
  let h2 = document.createElement("h2");
  h1.innerText = "这是h1";
  h2.innerText = "这是h2";
  document.body.append(h1,h2);
  let i = document.createElement("img");
  i.src = "../b.png";
  document.body.appendChild(i);
</script>
</body>
</html>